Eris sacerdos in aeternum (idea)

Latin for "you will be a priest forever". Originally in Psalm 110:4, it is used to
remind people that you can be President for a term, or a policeman for a lifetime,
but a priest's duties extend beyond mortal life.

Consider that Dante Alighieri put an inordinate amount of members of the Clergy in his
Hell, and justified this by saying that if you are the Pope, you must take
care even when you cough, to do it the right way.